wow, it's been a while since I've been here.
yes, I emailed Harvard and they said, "We do provide student hosts; you will be receiving a package later this month with all of this information in detail."
as for the people who asked about receiving other things, I've received a letter about being contacted by current students (you send in info on what you'd like to hear about). they also sent two emails (one for fin aid and one as an update to acceptance).
PS Pookie, could you let me know if there are more questions?